EP 0409525 B1 19940907 - Apparatus and method for making pressboard from poly-coated paper using relative movement of facing webs.
Title (en)
Apparatus and method for making pressboard from poly-coated paper using relative movement of facing webs.
Title (de)
Apparat und Verfahren zum Herstellen von Pressplatten aus polymerbeschichtetem Papier mit Hilfe der Relativbewegung von gegenüberliegenden Bändern.
Title (fr)
Appareil et procédé pour fabriquer des panneaux comprimés à partir de papier revêtu de polymères, en utilisant le mouvement relatif des bandes opposées.
Publication
Application
Priority
US 38320889 A 19890721
Abstract (en)
[origin: EP0409525A2] Apparatus and process for fabricating pressboard from shredded paper coated with a thermoplastic material and a pair of facing webs includes placing the shredded poly-coated paper (18) between the two travelling webs (12,14) to form a composite, the composite then being passed in a manner to differentially shift the travelling webs relative to each other for enhanced bonding of the shreds to themselves and to the facing webs, by pressing them through a series of heated rollers (46-52) defining a serpentine path while heating the thermoplastic material above its softening point, and pressing the composite together.
IPC 1-7
IPC 8 full level
B32B 27/10 (2006.01); B27N 3/00 (2006.01); B27N 3/06 (2006.01); B29B 17/00 (2006.01); B32B 37/00 (2006.01); B32B 37/20 (2006.01); B32B 37/24 (2006.01); D21H 23/00 (2006.01); D21H 27/22 (2006.01); D21H 27/30 (2006.01)
CPC (source: EP US)
B27N 3/007 (2013.01 - EP US); B27N 3/06 (2013.01 - EP US); B29B 17/0026 (2013.01 - EP US); B32B 37/0053 (2013.01 - EP US); B32B 37/10 (2013.01 - EP US); B29K 2311/12 (2013.01 - EP US); B29L 2007/002 (2013.01 - EP US); Y02W 30/62 (2015.05 - EP US); Y10S 264/914 (2013.01 - EP US); Y10T 156/1722 (2015.01 - EP US); Y10T 156/1741 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0409525 A2 19910123; EP 0409525 A3 19920129; EP 0409525 B1 19940907; AT E111011 T1 19940915; CA 2014089 A1 19910121; CA 2014089 C 19970114; DE 69012247 D1 19941013; DE 69012247 T2 19950105; DK 0409525 T3 19941010; ES 2058803 T3 19941101; FI 903678 A0 19900720; FI 95303 B 19950929; FI 95303 C 19960110; JP H0369363 A 19910325; JP H0745237 B2 19950517; US 5137668 A 19920811; US 5380180 A 19950110
DOCDB simple family (application)
EP 90307744 A 19900716; AT 90307744 T 19900716; CA 2014089 A 19900406; DE 69012247 T 19900716; DK 90307744 T 19900716; ES 90307744 T 19900716; FI 903678 A 19900720; JP 11163290 A 19900426; US 58459590 A 19900918; US 80943791 A 19911217